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Employee Benefit Plans (Other Changes in Plan Assets and Benefit Obligations) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Compensation and Retirement Disclosure [Abstract]  
Current year actuarial loss $ 4,344
Amortization of actuarial loss 3,233
Total recognized in other comprehensive loss 7,577
Estimated portion of net actuarial loss in accumulated other comprehensive loss $ 2,800